$29 paid Node source kit
Stripe invoice tax ID collection without a billing rewrite.
Add checkout metadata capture, customer tax ID review fields, signed invoice webhook handling, and receipt-ready invoice data around an existing Stripe Billing app with a focused Node source package.
Best fit: SaaS teams that already use Stripe invoices and need a reviewable implementation pattern before adapting tax fields into their own billing operations.
What this replaces
Ad hoc invoice notes, tax ID spreadsheets, and webhook handlers that mix invoice review state into unrelated subscription code.
Buyer checks
The delivered kit includes npm test,
npm run smoke:buyer, and
npm run verify:manifest so a buyer can verify the archive
before adapting it.
Checkout
Gumroad is the primary paid-file delivery path:
launchagent.gumroad.com/l/knpcbo.
Base USDC
Send 29 USDC on Base to
0xFF5af6e1c73904FF36754377A3069812E706323E, then email
the transaction hash and desired kit name to
agentlaunchops@proton.me.